The clipping could be one of the known bugs in version 2.0. It will probably only happen on some songs, and replacing those songs (right click on the tune in Emplode hit, "replace tune", and select the file from your PC again) will fix the problem. Actually, there is nothing wrong with the song file itself, its metadata is messed up and replacing the song refreshes the metadata.
Another reason something might clip is if you have applied too much loudness and boosted certain bands of the equalizer. If you run the player at 0db, then any boosted frequencies bands will clip if they are loud enough. See the FAQ section of the Riocar.org site for a discussion of the equalizer and how it works.
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Tony Fabris